Analisis Preventive Maintenance Pada Generator Set (Genset) Dengan Metode Mean Time Between Failure (Mtbf) Dan Mean Time To Repair (Mttr) Di Pt. Swadaya Abdi Manunggal

The reliability of backup power supply is a critical factor in ensuring smooth industrial operations. PT. Swadaya Abdi Manunggal operates a Perkins 640 KVA generator set (genset) as an emergency power source, but in practice, it frequently experiences sudden breakdowns, disrupting production processes and increasing downtime. This situation highlights the need for an effective preventive maintenance strategy to maintain the performance and availability of the genset. This study aims to determine the optimal preventive maintenance interval by analyzing failure and repair data from January to December 2024 using Mean Time Between Failure (MTBF), Mean Time To Repair (MTTR), and Availability calculations. The analysis results show an MTBF of 504.875 hours (±21 days), an MTTR of 1.22 hours, and an availability of 84.68%. Based on the MTBF value, the recommended preventive maintenance interval is every 21 days, shorter than the previous schedule of every four weeks. This adjustment is expected to reduce the frequency of sudden failures, extend the lifespan of critical components, improve machine reliability, and maintain smooth production processes and operational efficiency.